One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,6,7,8)(9,10,13,14)(11,15,16,12)(17,18)(19,23)(20,24)(21,22)(26,27)(28,32)(2,5)(6,8)(9,11)(10,12)(13,16)(14,15)(17,19)(18,20)(21,23)(22,24)(26,27)(30,31) involution — undirected(3,7)(6,8)(10,14)(12,15)(18,21)(19,24)(25,26,29,27)(28,30,32,31)(1,2)(3,8)(4,5)(6,7)(9,11)(10,15)(12,14)(13,16)(17,20)(18,19)(21,24)(22,23)(25,27,29,26)(28,31,32,30)(1,3,4,7)(2,6,5,8)(9,12,13,15)(10,16,14,11)(17,21,22,18)(19,23,24,20)(25,28)(26,30)(27,31)(29,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.